Chrysanthemum plant named ‘Tatyana’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘Tatyana’, characterized by its large decorative-type inflorescences with white-colored lanceolate-shaped ray florets; numerous ray florets and very few disc florets; disc florets typically inconspicuous; dark green-colored foliage; strong and upright flowering stems; low number of lateral branches which reduces the amount of disbudding required; short response time; and excellent postproduction longevity.

Botanical designation: Chrysanthemum×morifolium.

Cultivar denomination: ‘Tatyana’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Chrysanthemum plant, botanically known as Chrysanthemum×morifolium and referred to by the name ‘Tatyana’.

The new Chrysanthemum was discovered and selected by the Inventor in a controlled environment in 's-Gravenzande, The Netherlands, as a naturally-occurring whole plant mutation of the Chrysanthemum cultivar Anastasia, disclosed in U.S. Plant Pat. No. 13,550. The new plant was discovered within a population of plants of the cultivar Anastasia and was selected on the basis of its unique green-colored ray florets.

Asexual reproduction of the new Chrysanthemum by terminal cuttings in 's-Gravenzande, The Netherlands since May, 2003, has shown that the unique features of this new Chrysanthemum are stable and reproduced true to type in successive generations.

BRIEF SUMMARY OF THE INVENTION

The cultivar Tatyana has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Tatyana’. These characteristics in combination distinguish ‘Tatyana’ as a new and distinct cultivar:

-   -   1. Large decorative-type inflorescences with white-colored         lanceolate-shaped ray florets; typically grown as a disbudded         type with a single inflorescence per flowering stem.     -   2. Numerous ray florets and very few disc florets; disc florets         typically inconspicous.     -   3. Dark green-colored foliage.     -   4. Strong and upright flowering stems.     -   5. Low number of lateral branches which reduces the amount of         disbudding required.     -   6. Short response time.     -   7. Excellent postproduction longevity.

Plants of the new Chrysanthemum are most similar to plants of the parent cultivar Anastasia. In side-by-side comparisons conducted by the Inventor in 's-Gravenzande, The Netherlands, plants of the new Chrysanthemum differed primarily from plants of the cultivar Anastasia in ray floret shape as plants of the cultivar Anastasia had quill-shaped ray florets.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new cultivar, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the actual colors of the new Chrysanthemum.

The photograph on the first sheet comprises a side perspective view of a typical flowering stem of ‘Tatyana’.

The photograph at the top of the second sheet is a close-up view of a typical flowering stem of ‘Tatyana’.

The photograph at the bottom of the second sheet comprises a close-up view of the upper and lower surfaces of typical leaves of ‘Tatyana’.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. The aforementioned photographs and following observations and measurements describe plants grown in 's-Gravenzande, The Netherlands, under commercial practice in a glass-covered greenhouse. Plants were initially given long day/short night treatments followed by short day/long night treatments to induce flower initiation and development. Average day and night temperatures were 18° C. and 19° C., respectively. Plants were not pinched and were grown as single-stem disbud types.

-   Botanical classification: Chrysanthemum×morifolium cultivar Tatyana. -   Commercial classification: Decorative-type Chrysanthemum typically     grown as a disbudded cut flower. -   Parentage: Naturally-occurring whole plant mutation of     Chrysanthemum×morifolium cultivar Anastasia, disclosed in U.S. Plant     Pat. No. 13,550. -   Propagation:     -   -   Type.—Terminal tip cuttings.         -   Time to initiate roots, summer.—About 10 days at 20° C.         -   Time to initiate roots, winter.—About 14 days at 20° C.         -   Root description.—Fine, fibrous and well branched. -   Plant description:     -   -   Appearance.—Herbaceous decorative-type cut Chrysanthemum;             typically grown as a single-stem and as a disbudded type             with one single inflorescence per flowering stem. Upright             and strong flowering stems.         -   Growth rate.—Moderate; moderately vigorous.         -   Crop time.—For cut flowers, about 78 and 117 days are             required to produce flowering stems during the summer and             winter, respectively.         -   Flowering stem description.—Length: About 80 to 90 cm.             Diameter, at apex: About 6.5 mm. Strength: Strong. Aspect:             Upright. Branching habit: Plants are typically grown as             single stems, but if pinched, will develop 8 to 12 lateral             stems. Color: 146B.         -   Foliage description.—Arrangement: Alternate. Quantity of             leaves per main stem: About 22 to 27. Length: About 8 to             13 cm. Width: About 4 to 7 cm. Apex: Acuminate. Base:             Attenuate. Margin: Palmately lobed. Texture, upper and lower             surfaces: Rough; pubescent. Petiole length: About 1 to 2 cm.             Color: Developing foliage, upper surface: 137B. Developing             foliage, lower surface: Closest to 147B. Fully expanded,             upper surface: 147A. Fully expanded, lower surface: 137B.             Venation, upper surface: 147B. Venation, lower surface:             147C. Petiole, upper and lower surfaces: 147B. -   Inflorescence description:     -   -   Appearance.—Decorative-type inflorescence form.             Inflorescences borne on terminals, arising from leaf axils.             Ray and disc florets develop acropetally on the receptacle.         -   Flowering response.—Under natural conditions, plant             typically flower in November in the Northern Hemisphere. At             other times of the year, inflorescence initiation and             development can be induced under short day/long night             conditions (at least 13 hours of darkness). Plant exposed to             long day/short night conditions after planting followed by             photoinductive short day/long night conditions flower about             seven weeks later.         -   Postproduction longevity.—Inflorescences will maintain good             substance and form for about 3.5 weeks after harvesting.         -   Quantity of inflorescences per flowering stem.—Grown as a             disbud type, all lateral inflorescences are removed and only             the terminal inflorescence develops. If lateral             inflorescences are not removed, about 8 to 11 inflorescences             per flowering stem will develop.         -   Inflorescence size.—Diameter: Large, about 12 to 14 cm.             Depth (height): About 3 to 4 cm. Diameter of disc: About 1.2             cm; inconspicuous.         -   Inflorescence buds.—Length: About 1 to 1.5 cm. Diameter:             About 1.2 to 1.5 cm. Shape: Oblate. Color: Close to 146A.         -   Ray florets.—Length, fully developed: About 6.1 to 6.4 cm.             Width, fully developed: About 1.8 to 2 cm. Shape:             Lanceolate. Apex: Acute, emarginate or rounded. Base: Fused,             tubular. Texture, inner and outer surfaces: Smooth,             glabrous. Number of ray florets per inflorescence:             About 250. Color: When opening, upper and lower surfaces:             155D. Fully opened, upper and lower surfaces: Lighter than             155D.         -   Disc florets.—Shape: Oblong, tubular. Length: About 4 mm.             Width: About 1 mm. Number of disc florets per inflorescence:             Few, about two; inconspicuous. Color: Immature: Close to             154D. Mature: Towards apex, 144A; center, 153C; towards             base, 145C.         -   Peduncles.—Length, terminal peduncle: About 2.5 cm. Length,             fourth peduncle: About 4 to 5 cm. Diameter: About 4 to 5 mm.             Texture: Pubescent. Color: 147B to 147C.         -   Reproductive organs.—Androecium: Present on disc florets             only. Anther color: 15B. Amount of pollen: Moderate. Pollen:             16B. Gynoecium: Present on both ray and disc florets. Stigma             length: About 5 mm. Stigma width: About 0.5 mm. Stigma             color: Towards the apex, 9C; towards the base, close to             155C.         -   Seed/fruit.—Seed and fruit production has not been observed. -   Disease/pest resistance: Resistance to known Chrysanthemum pathogens     and pests has not been observed on plants of the new Chrysanthemum. 

1. A new and distinct cultivar of Chrysanthemum plant named ‘Tatyana’, as illustrated and described. 